[#EVP_PKEY_check]
= EVP_PKEY_check
:mrdocs:

Validate the key associated with a key context (public/private consistency checks).

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_check(xref:EVP_PKEY_CTX.adoc[EVP_PKEY_CTX]* ctx);
----

== Return Value

1 if the key is valid, 0 if invalid, or a negative value on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Context whose key is checked (from EVP_PKEY_CTX_new or similar).
|===


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